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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>
    <h2>gitee</h2>

    <div>iiii</div>

    <header>我来组成头部</header>

    <div id="new">gitee协作</div>
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</html>